IE41336L - Reducing heavy metals in solution. - Google Patents
Reducing heavy metals in solution.Info
- Publication number
- IE41336L IE41336L IE750946A IE94675A IE41336L IE 41336 L IE41336 L IE 41336L IE 750946 A IE750946 A IE 750946A IE 94675 A IE94675 A IE 94675A IE 41336 L IE41336 L IE 41336L
- Authority
- IE
- Ireland
- Prior art keywords
- waters
- iron
- electropositive
- purification
- solution
- Prior art date
Links
- 229910001385 heavy metal Inorganic materials 0.000 title abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 6
- 229910052742 iron Inorganic materials 0.000 abstract 3
- 239000003643 water by type Substances 0.000 abstract 3
- 238000000746 purification Methods 0.000 abstract 2
- 238000006722 reduction reaction Methods 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011324 bead Substances 0.000 abstract 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 150000002736 metal compounds Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/467—Foam spreading or levelling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/006—Degassing moulding material or draining off gas during moulding
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
- Catalysts (AREA)
Abstract
For the purification of effluents containing heavy metal compounds, these waters are contacted with an element selected from those more electropositive than hydrogen. The reduction reaction must be carried out at a pH less than or equal to 3. The water to be treated is caused to flow through one or more columns filled with the more electropositive element in the form of granules, beads, strips, shavings or any form compatible with the dimensions of said column. If, for example, the waters to be treated contain chromates, the element used is iron. In this case, the exit pH from the reduction system is kept below the value corresponding to that at which the iron is precipitated as hydroxide. In this way, purification of the waters is achieved with a reduced consumption of more electropositive elements, in this example, iron.
[GB1474145A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT22396/74A IT1010486B (en) | 1974-05-08 | 1974-05-08 | PROCEDURE FOR THE PURIFICATION OF WASTE WATER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE41336L true IE41336L (en) | 1975-11-08 |
| IE41336B1 IE41336B1 (en) | 1979-12-05 |
Family
ID=11195718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE946/75A IE41336B1 (en) | 1974-05-08 | 1975-04-28 | Reducing the contents of heavy metals in solution |
Country Status (23)
| Country | Link |
|---|---|
| JP (1) | JPS50152557A (en) |
| AT (2) | AT346253B (en) |
| BE (1) | BE828570A (en) |
| CH (1) | CH617642A5 (en) |
| CS (1) | CS202546B2 (en) |
| DD (1) | DD118051A5 (en) |
| DE (1) | DE2520531A1 (en) |
| DK (1) | DK196775A (en) |
| ES (1) | ES437875A1 (en) |
| FI (1) | FI751142A7 (en) |
| FR (1) | FR2270209B1 (en) |
| GB (1) | GB1474145A (en) |
| IE (1) | IE41336B1 (en) |
| IL (1) | IL47073A (en) |
| IT (1) | IT1010486B (en) |
| LU (1) | LU72427A1 (en) |
| NL (1) | NL7505514A (en) |
| NO (1) | NO751626L (en) |
| PL (1) | PL111038B1 (en) |
| RO (1) | RO69366A (en) |
| SE (1) | SE7505290L (en) |
| TR (1) | TR19213A (en) |
| YU (1) | YU103975A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2613128C2 (en) * | 1976-03-27 | 1982-03-04 | Hoechst Ag, 6000 Frankfurt | Process for reducing the mercury content of industrial wastewater |
| IT8348501A0 (en) * | 1982-06-16 | 1983-06-14 | Occidental Chem Co | APPARATUS AND PROCEDURE FOR REMOVING COPPER IONS FROM AN AQUEOUS SOLUTION |
| DE3411228C1 (en) * | 1984-03-27 | 1985-05-30 | Du Pont de Nemours (Deutschland) GmbH, 4000 Düsseldorf | Process for the environmentally friendly purification of photographic wash water from film processing machines and apparatus for carrying out the process |
| DE4217987A1 (en) * | 1992-05-30 | 1993-12-02 | Battelle Institut E V | Process for the separation of heavy metals, in particular in the form of mercury, nickel and cobalt, as well as compounds thereof from the ground, sludge and water |
| DK0660804T3 (en) * | 1992-09-18 | 1997-09-01 | Krueger As I | Process for purifying metal-containing aqueous media and process for preparing an adsorbent. |
| DE102007045337B4 (en) * | 2007-09-22 | 2021-01-07 | Bayerische Motoren Werke Aktiengesellschaft | Procedure for protection against dust containing chromium (VI) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2177656B1 (en) * | 1972-03-31 | 1979-02-16 | Lewandowski Raymond |
-
1974
- 1974-05-08 IT IT22396/74A patent/IT1010486B/en active
-
1975
- 1975-04-11 IL IL47073A patent/IL47073A/en unknown
- 1975-04-17 FI FI751142A patent/FI751142A7/fi not_active Application Discontinuation
- 1975-04-23 YU YU01039/75A patent/YU103975A/en unknown
- 1975-04-25 GB GB1736975A patent/GB1474145A/en not_active Expired
- 1975-04-28 CH CH541075A patent/CH617642A5/en not_active IP Right Cessation
- 1975-04-28 IE IE946/75A patent/IE41336B1/en unknown
- 1975-04-29 TR TR19213A patent/TR19213A/en unknown
- 1975-04-29 BE BE155938A patent/BE828570A/en unknown
- 1975-05-05 PL PL1975180173A patent/PL111038B1/en unknown
- 1975-05-05 RO RO7582142A patent/RO69366A/en unknown
- 1975-05-05 CS CS753094A patent/CS202546B2/en unknown
- 1975-05-05 DK DK196775A patent/DK196775A/en unknown
- 1975-05-06 SE SE7505290A patent/SE7505290L/en unknown
- 1975-05-06 DD DD185871A patent/DD118051A5/xx unknown
- 1975-05-06 FR FR7514128A patent/FR2270209B1/fr not_active Expired
- 1975-05-06 NO NO751626A patent/NO751626L/no unknown
- 1975-05-07 LU LU72427A patent/LU72427A1/xx unknown
- 1975-05-07 DE DE19752520531 patent/DE2520531A1/en active Pending
- 1975-05-07 AT AT351775A patent/AT346253B/en not_active IP Right Cessation
- 1975-05-07 ES ES437875A patent/ES437875A1/en not_active Expired
- 1975-05-08 JP JP50054324A patent/JPS50152557A/ja active Pending
- 1975-05-09 NL NL7505514A patent/NL7505514A/en not_active Application Discontinuation
-
1976
- 1976-05-28 AT AT390876A patent/AT351775B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ES437875A1 (en) | 1977-01-01 |
| DE2520531A1 (en) | 1975-11-13 |
| AT346253B (en) | 1978-11-10 |
| NO751626L (en) | 1975-11-11 |
| DD118051A5 (en) | 1976-02-12 |
| ATA390876A (en) | 1979-01-15 |
| FI751142A7 (en) | 1975-11-09 |
| BE828570A (en) | 1975-08-18 |
| RO69366A (en) | 1981-07-30 |
| CH617642A5 (en) | 1980-06-13 |
| AT351775B (en) | 1978-02-15 |
| NL7505514A (en) | 1975-11-11 |
| DK196775A (en) | 1975-11-09 |
| IL47073A (en) | 1978-07-31 |
| IT1010486B (en) | 1977-01-10 |
| IE41336B1 (en) | 1979-12-05 |
| IL47073A0 (en) | 1975-06-25 |
| LU72427A1 (en) | 1975-08-26 |
| AU8013875A (en) | 1976-10-21 |
| PL111038B1 (en) | 1980-08-30 |
| SE7505290L (en) | 1975-11-10 |
| YU103975A (en) | 1982-02-28 |
| ATA351775A (en) | 1978-02-15 |
| JPS50152557A (en) | 1975-12-08 |
| TR19213A (en) | 1978-06-07 |
| CS202546B2 (en) | 1981-01-30 |
| FR2270209A1 (en) | 1975-12-05 |
| FR2270209B1 (en) | 1980-04-18 |
| GB1474145A (en) | 1977-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mosey et al. | Factors affecting the availability of heavy metals to inhibit anaerobic digestion | |
| GB1490926A (en) | Removal of hexavalent chromate trivalent chromium molybdate and zinc ions from water | |
| Kim | Treatment of metal containing wastewater with calcium sulfide | |
| IE41336B1 (en) | Reducing the contents of heavy metals in solution | |
| GB1417902A (en) | Separation of isotopes and corrosion products from liquid waste | |
| US3136715A (en) | Process of removing ruthenium from aqueous solutions | |
| JPS574229A (en) | Metallic ion adsorbent | |
| JPS57105284A (en) | Purification of waste water used in desulfurization of exhaust gas | |
| GB1471162A (en) | Operation of a two-phase reactor | |
| JPS56136648A (en) | Chemical agent for water treatment | |
| JPS54156346A (en) | Purification of metal plating waste water | |
| JPS57144080A (en) | Method and device for purification of liquid using oxine-stuck active carbon | |
| Barsom et al. | Evaluation of lagoon performance in light of 1965 Water Quality Act | |
| Kantawala et al. | Comparative study of recovery of zinc and nickel by ion-exchange media and chemical precipitation | |
| JPS5451972A (en) | Method of continuously treating sexivalent chrome | |
| SCHAFFER | INTERIM EFFLUENT GUIDANCE FOR NPDES PERMITS | |
| JPS52109761A (en) | Purification method of waste water | |
| FR2201257A1 (en) | Waste-water purification - using water miscible solvent, and mineral prodt coated with hydrophobic material | |
| Wolff | Selective elimination of heavy metals from industrial effluents by means of ion-exchange resins and adsorbents | |
| Ferguson et al. | Minewater Treatment-Inco Sudbury District Operations | |
| JPS52133076A (en) | Reforming of aluminium sludge | |
| JPS52124756A (en) | Process for continuously treating waste water | |
| JPS5273183A (en) | Removal of hydrogen chloride in exhaust gas | |
| JPS57153790A (en) | Regeneration of chelating resing having adsorbed fluorine compound in it | |
| JPS6238247A (en) | Method for regenerating ion exchange resin |